Hello everyone. New to This forum, but have read many posts. Anyway, I have a 2000 Mack RD688 Dump Truck. 12 speed TRTXL-1070B Trans. This month I replaced the dump box, any all accerories, cylinder, pump, pto, etc. My old setup had had teh rear(botton mount mack pto with remote mount pump. Which I want direct mount( alot less worries). First Chelsea Sent me a 489 series pto. Wont fit since there is a bulge in the trnas. So they then sent me a 442 series with a 628 series Adapter gear to clear the transmission bulge. Well the problem is now, that with only 1 gasket, the gear adapter has about a 1/4" play in it( so much for getting the blacklash right). OK, then when I put the pto up to the gear adapter, using there spacer and 6 gaskets that are required, I dont have enough backlash. ( under the ercommended). Problem #3, is since I spread rock in 2nd gear, the pump is not turned fast enough. takes minute and a half to raise. Way to slow. By the way I thought it said it was a 127% PTO. unless its in fifth gear, then it raises fine. But I dont spread rock at 50 MPH. Plus it seems to whine anything about idle in 3rd gear. What I am wondering, is if they9 Chealsea) know what there doing and also do they make a mack rear PTO that is direct drive? Any info would be VERY helpful, Thanks