Read your manual and screw the LPR adjustment all the way in or out (whichever lowers the pressure to 0 or thereabouts) and adjust by slowly increasing it. Of course, Bob Longs are tuned most perfectly with a tester. Many people get by fine without one though.
"and buy a pressure tester to prevent over pressurizing my LPR." The tester is to make your gun run at the optimal pressures. The concern about high pressure is not in damaging your LPR/HPR regulators, but your solenoid.
O-rings are cheap. Don't let anyone fool you into thinking otherwise. Mcmaster.com you can order them for like $2 per 100. Your manual does list all o-ring sizes.
As for dow55, you can also use dow33 or one of various other paintball equivalents. I wouldn't call this expensive, as you need lube for each and every kind of gun's regulator and more in many circumstances.
Even if you got something other than this Victory, you would still have needed a few extra o-rings and lube.
I think this is your manual:
Edited by Sydarm, 25 October 2013 - 08:35 PM.