It's been about 5 years since I last used my X-Valved Minimag with ULE trigger. I recently replaced and oiled the powertube and on/off o-rings.

I'm getting a bad leak down the powertube and tried changing the L10 carrier to a smaller size. 1.5 seems to be the best when test fitted but it still leaks. Right now it's on size 1 and it still leaks. The spring is medium (red) and there are two shims used in the powertube tip.

I know it's the powertube because it pretty much stops leaking when i hold the trigger back.
Any ideas on how to get my mag working again?