What @flummer said was the case for me for both the Ultimate Hardware Kit, as well as the Additional Hardware Kit 1V1R.
@MalcTheOracle In the point of the Ultimate kit being able to make
2 vehicles official and 2 remotes
After using 42 (21x2) M2.5x6 BHCS Machine Screw in the remotes… I seems (if I have counted correctly) like I should have enough for
- 5 forklifts (10 screws for each)
- 4 soccerbots (12 screws needed for each)
- 2 trucks (21 screws needed for each)
In other words, you have a surplus of screws whatever you build… but the same can’t be said for the LEDs 
There are enough LEDs to make two forklifts, two soccerbots, but not two trucks… (although you could make one truck, and one forklift or soccerbot)… so yeah, that … sucks.
There was two in my “Ultimate” 2V2R pack … and only one in the 1V1R pack, which matches the parts listing.
On the bright side… since I have the 2V2R and 1V1R I can make two trucks, and have 2 leds left over for a third (non-truck) vehicle? 
Or two soccerbots, one truck?