x-valve consistancy problems

[afrankart]

I have had my x-valve for about 2 months now, and I love it. The only thing is, especially lately, my velocity is all over the place. I keep it well oiled, and use the #1 carrier with 1 shim and the shortest spring. I will chrono in (proper RT style) at 290 or so, shoot 200 shots, recheck my velocity and it will be around 310. I will adjust it down, play some more, check it again, and I am shooting hot. I also noticed that my shot to shot variances can be around +/- 8 or so. My classic could hold +/- 2 all the time. I have tried to eliminate some variables, by trying it with different paint, and spring lengths. It seems that the longer spring I use, the more it jumps around. I am running a centerflag preset with 750 psi output. I have also noticed sometimes that when I chrono it properly, my velocity can be lower than if I pull and release every shot. This is not always the case, it varies from day to day and game to game. Anyone had this happen to them?


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[afrankart]

I don't know, maybe I'll replace the reg o-ring and see if that will help. If anyone has any additional suggestions, I would appreciate them.

[Fritz1970]

Try a different tank with 800+psi output

Level 10 bolts require more pressure from the bottle than non-LX bolts. I have an RT that won't fire consistently unless the output pressure of the bottle is 800+psi. The only exception is when I use a MacDev Conquest; they can be set a little lower than most bottles on my RT.

I don't know much about X-Valves, but I think their input pressure requirements are the same.

Of course, now you have an excuse to buy a new adjustable bottle!

The only other thing I can think of is to make sure your power tube tip is tightly (although not TOO tightly) screwed in.

Good luck!

Fritz