I'm not all that familiar with Husky's but I pulled out of an event once when my 89 KX250 was making horrible noises, I thought it had done a big end but turned out to be a cush drive system in the clutch basket. Turned the oil into real sludge with all that ground up rubber.
I found some rubber mat the right thickness, found a tube the right diameter to match the basket, sharpened the end of the tube to form a punch & cut out some rubber bits to fit, rubber was nothing special but you wouldn't want anything too soft. Put it all back together & it ran fine.