I have a BH92 on a Grand L3940 cab, and have had a few problems with 0-rings in the control valves. It's been in the shop twice, and I only have 350 hours on the meter. Dealer claims the hydraulic remote, that operates a front grapple, is causing pressure spikes to the BH92 and blowing out seals. Anyone have a similar problem? Let me know if you have, and if you have solutions. Dealer is checking into options (possible bypass valve for the BH), or possible separate hydraulic pump for the grapple. Thanks for any feedback.