Today the Dog started giving me problems downshifting. At times I'll have to push the shifter 4-5 times before it will drop into the next lower gear, a few times it shifted from 5th to neutral or 4th to neutral. I changed the trans oil within the last 1200mi using Royal Purple; checked the level and she's still full and purple. There are no issues with upshifting. Is this a failing shift fork? 2000 Bulldog; 107" S&S; assuming an original Andrew's geared 5spd.