Scott, Parker single triggers are very touchy, if the brake cleaner didn't work it's time to send it off to Del Grego. I own 6 or 8 SST Parkers and if they don't work with a cleaning I send them off cause if you mess with them or have someone who doesn't know what they are doing you will have a real "mess" on your hands and alot more money invested to fix the fix. Eric
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