hello all--I also have a question about scv--JD parts call this 'quik disconnect coupler deluxe' i think, has drain-back plumbing taking fluid to filler tube/sump. My problem is its forcing the o-ring out under the plastic collar-right at the gap in circlip, only place it can without splitting that collar, i guess. first time it happened, no remotes were in use-guy hit wrong lever--fluid sprayed back glass--figured maybe it dead-headed & pressured up--replace o-rings under that collar. Now--first time remote was actually used, it spit again-obviously i need to go deeper into this coupler-just how is this drainback supposed to work? thanks-paul