2019 600R Fuel Pump bucket install?

Beginning last year I noticed a small, intermittent fuel leak coming from just under the fuel tank. I canceled a ride after taking it apart right at the trail head. Thought it was fixed. Got it back together and it still leaked. The tank had not been apart prior. I lifted the tank once to install the tunnel protectors, but had never taken the bucket out or broken it's seal. I made several failed attempts at fixing it throughout the season, thinking it was fixed.

Now that there is time I took it apart again. Thought I got a good seal, put it back together and again it leaks. This isn't that hard of a process. What is hard is getting the seal back in and the bucket seated squarely. Once enough pressure is applied the bucket assembly is firmly seated and doesn't move at all. Seems like it's in. Replace the retaining ring and check it. leaks. The seal looks fine. I've tried various lubes on the seal, even freezing it to limit it's ability to pinch. It seems like it goes in, but always leaks. I've worked a lot in the past with these types of pump/buckets in cars in the past. No such issues.

A check of the maintenance manual says the seal needs to be replaced every time. We all know that that normally means. But in this case maybe it really means something. The fit is so tight I'm thinking it tends to swell when exposed to fuel. Or there is a small crack in the bucket cover somewhere that I simply can't see. I've ordered a new $25 dollar seal, $35 after shipping. Only to find out that it is a special order item and my take some time to show up.

I hate letting something sit waiting for a part that I don't know will fix an odd problem. Any techs out there that can tell me if this is normal? In the mean time I'm going to take a closer looks for a crack or something in the bucket lid.

Thanks,