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Hi Everyone. I purchased a 2003 Mooney M20R last April and during the pre-buy, we noticed mushy left brake pedal on the pilot side. The issue was fixed by bleeding the brakes bottom-up and then at every fitting under the belly where small amounts of air bubbled out. Since then the problem slowly got worse and this annual we decided to figure out the root-cause. Here's a list of what we have performed: 1. Identified that Swagelok B-400-7-2 fitting that connects the plastic tubing coming from the reservoir to the T that feeds to the low side of the Pilot master cylinders. Replaced the fitting and the leak stopped. Flushed caliper up and problem persisted. This probably was a problem but not the root-cause. 2. Removed all 4 master cylinders (pilot and co-pilot) and re-sealed them. Although some seals were worn out the inspection before and after revealed no external or internal leaks. We re-sealed anyway. Flushed the system caliper up both sides but the problem persisted. 3. Checked the calipers, lines, fittings and flushed the system reservoir down, caliper up, applied vacuum at the reservoir many-many times. Problem remained. 4. We noticed that the maintenance manual has different bleeding instructions for a/c with pedals on both sides. We blocked the reservoir, pushed fluid up the calipers with a high-flow fitting and cracked open the fittings at the parking brake manifold to see minimal amount of bubbles. I heard from a hangar buddy that when he replaced his a/c's tire, the two parts of the rim didn't fit perfectly because the valve stem could only fit in 1 of 3 positions. This caused the caliper to be pushed back enough during taxi that the first pump pushed the pads close to the disk and the second press held perfectly, unless he was taxiing faster. There are no visible leaks at all and we're kind of lost here. Any help is greatly appreciated. Thanks

Hi gang. Looking for a fuel cap for my '65 M20C. The one I have now is almost impossible to get the tab down. Maybe it can be fixed but not sure how?