Well Mr. Nobrakes they are a really good sled when you have a good one.
All dealers i talked to and Cat published info I have says 7 but I'll take 8s, even better. Just need chain case guard. Good trade for drop and roll and covered with Cat cash.
Only Alpha is 7 due to 3.5 pitch track.
All other MCs are 8s.
I wonder if the cat track is a true 3” track, or the drop and roll is more than doos?? Doo is using a 6t as you know and its a true 3” lug.
I do remember guys trying the 8t 3.0 pitch on the T3 and if I remember right the increased exposure of the driver caused the drive shaft to bend easier.