Great to hear and thanks for posting the results for others to learn from. Just a side note the spacers are used for tunning the L10. Try 1-2 o-rings and a squigee @ 1/4" away from the bolt face and fire the marker. The bolt will hit the squigee and should reset by itself. If it dose'nt add 1 shim at a time until it dose. I would retune the L10 because you changed the o-ring, but thats just me. Also L10 shims are thicker than the ULT's, but you can mix and match for real fine tunning adjustments..

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