Here's what is in the .ini file for these controls:
46=PG,1,C65893,0 -{AP_ALT_VAR_DEC}-
47=CP(+G,2)G,1,C1016,0 -{ap alt var dec fast}-
48=PG,0,C65892,0 -{AP_ALT_VAR_INC}-
49=CP(+G,2)G,0,C1017,0 -{ap alt var inc fast}-
Here's the log file showing me exercise the left/right turn of the knob, as well as pressing and holding the button and turning the knob, which should execute the fast events, but in BOTH cases where the condition is False and True, the altitude changes only be 100 feet, NOT 1000 feet for the case of the FAST events. In addition it can be seen that the Ctrl= switches from 1016/1017 to C65892/C65893 which represent the FAST and regular control events:
253985 Button changed: bRef=0, Joy=0 (G), Btn=1, Released
254953 Button changed: bRef=0, Joy=0 (G), Btn=0, Pressed
254953 [Buttons] 48=PG,0,C65892,0
254953 FS Control Sent: Ctrl=65892, Param=0 AP_ALT_VAR_INC
254953 [Buttons] 49=CP(+G,2)G,0,C1017,0
254953 .... Condition (+G,2) = FALSE
255031 Button changed: bRef=0, Joy=0 (G), Btn=0, Released
255438 Button changed: bRef=0, Joy=0 (G), Btn=0, Pressed
255438 [Buttons] 48=PG,0,C65892,0
255438 FS Control Sent: Ctrl=65892, Param=0 AP_ALT_VAR_INC
255438 [Buttons] 49=CP(+G,2)G,0,C1017,0
255438 .... Condition (+G,2) = FALSE
255516 Button changed: bRef=0, Joy=0 (G), Btn=0, Released
256125 Button changed: bRef=0, Joy=0 (G), Btn=1, Pressed
256125 [Buttons] 46=PG,1,C65893,0
256141 FS Control Sent: Ctrl=65893, Param=0 AP_ALT_VAR_DEC
256141 [Buttons] 47=CP(+G,2)G,1,C1016,0
256141 .... Condition (+G,2) = FALSE
256203 Button changed: bRef=0, Joy=0 (G), Btn=1, Released
256422 Button changed: bRef=0, Joy=0 (G), Btn=1, Pressed
256422 [Buttons] 46=PG,1,C65893,0
256422 FS Control Sent: Ctrl=65893, Param=0 AP_ALT_VAR_DEC
256422 [Buttons] 47=CP(+G,2)G,1,C1016,0
256422 .... Condition (+G,2) = FALSE
256500 Button changed: bRef=0, Joy=0 (G), Btn=1, Released
266719 Button changed: bRef=0, Joy=0 (G), Btn=0, Pressed
266719 [Buttons] 48=PG,0,C65892,0
266719 FS Control Sent: Ctrl=65892, Param=0 AP_ALT_VAR_INC
266719 [Buttons] 49=CP(+G,2)G,0,C1017,0
266719 .... Condition (+G,2) = FALSE
266797 Button changed: bRef=0, Joy=0 (G), Btn=0, Released
267297 Button changed: bRef=0, Joy=0 (G), Btn=0, Pressed
267297 [Buttons] 48=PG,0,C65892,0
267297 FS Control Sent: Ctrl=65892, Param=0 AP_ALT_VAR_INC
267297 [Buttons] 49=CP(+G,2)G,0,C1017,0
267297 .... Condition (+G,2) = FALSE
267375 Button changed: bRef=0, Joy=0 (G), Btn=0, Released
268328 Button changed: bRef=0, Joy=0 (G), Btn=1, Pressed
268328 [Buttons] 46=PG,1,C65893,0
268328 FS Control Sent: Ctrl=65893, Param=0 AP_ALT_VAR_DEC
268328 [Buttons] 47=CP(+G,2)G,1,C1016,0
268328 .... Condition (+G,2) = FALSE
268406 Button changed: bRef=0, Joy=0 (G), Btn=1, Released
268703 Button changed: bRef=0, Joy=0 (G), Btn=1, Pressed
268703 [Buttons] 46=PG,1,C65893,0
268703 FS Control Sent: Ctrl=65893, Param=0 AP_ALT_VAR_DEC
268703 [Buttons] 47=CP(+G,2)G,1,C1016,0
268703 .... Condition (+G,2) = FALSE
268781 Button changed: bRef=0, Joy=0 (G), Btn=1, Released
269688 Button changed: bRef=0, Joy=0 (G), Btn=0, Pressed
269688 [Buttons] 48=PG,0,C65892,0
269688 FS Control Sent: Ctrl=65892, Param=0 AP_ALT_VAR_INC
269688 [Buttons] 49=CP(+G,2)G,0,C1017,0
269688 .... Condition (+G,2) = TRUE
269688 FSUIPC Control Action: Ctrl=1017, Param=0
269766 Button changed: bRef=0, Joy=0 (G), Btn=0, Released
270141 Button changed: bRef=0, Joy=0 (G), Btn=0, Pressed
270141 [Buttons] 48=PG,0,C65892,0
270141 FS Control Sent: Ctrl=65892, Param=0 AP_ALT_VAR_INC
270141 [Buttons] 49=CP(+G,2)G,0,C1017,0
270141 .... Condition (+G,2) = TRUE
270141 FSUIPC Control Action: Ctrl=1017, Param=0
270219 Button changed: bRef=0, Joy=0 (G), Btn=0, Released
271016 Button changed: bRef=0, Joy=0 (G), Btn=1, Pressed
271016 [Buttons] 46=PG,1,C65893,0
271016 FS Control Sent: Ctrl=65893, Param=0 AP_ALT_VAR_DEC
271016 [Buttons] 47=CP(+G,2)G,1,C1016,0
271016 .... Condition (+G,2) = TRUE
271016 FSUIPC Control Action: Ctrl=1016, Param=0