thanx for reply and info,,my sons 300se is not shifting into high gear...then shut it off and restart and it works flawless.took it to a tranny shop,guy drove it for 3 days no problem,,i drove it home 20 miles mixed city highway and it drove perfect..my son takes it out that nite,,perfect..next day problem back..no slipping just shift problem...any ideas....i have a twin 300se in my yard for parts that has rod knock and tranny shifts good...thanx for any help