Those are a real PAIN Kevin,,, Ive used awls,, basically a real pointed screw driver, (2) of them. and Ive goobed the sealant on the fittings, and used the awls to line 2 holes across from each other,Opposite corners, to align the holes and get 2 of the bolts in. The sealant only gives you a couple minutes,(if that) to align everything before it sets in. In one case, The sealant adhered quickly and I used the awls to wiggle the alignment to get the slides to move freely,,, giving it a slight attitude adjustment. Just be sure you didnt get any of the sealant in the slide grooves and a little bearing grease always helps.
go to home depot get 2 rubber no hubs the size of your pipes 3 inch or 4 inch which ever you need cut pipe to slip these on i did it on my moms motor home works great no leaks easy to change when the valves go bad