Stud boy Duce bar what size

[bluegrass]

I am running a set of 4" woody dooly they took care of the darting but push a little if I put a set of stud boy Duce bar on with they help with this will they make the turnnung of the sled harder should I use a 4.5or 6 carbide or stay with whai i have is they much difference between the two woody vs stud boy

 

[nickleuci]

I had 7.5" stud boy shapers on stock skis. No push but heavy steering. 6" would have been enough to eliminate push. Shapers are more aggressive I think.