Hey Scotty,
Well I am happy to hear you have solved the first problem and sorry to hear about this latest one. Smoke sounds scary and fortunately you had no problem making it down safely. You will find many posts on this forum about fuel quantity gauges and they are a weak spot on these aircraft. I had my own issues with mine but never had any smoke like you just encountered. My gauges have been working well since I replaced my signal conditioner from Aero Mach Labs last year.
Many folks here have much to offer about how to determine fuel quantity but I myself am old fashion by simply SLOWLY topping the tanks and then keeping careful track of how much I have flown since the last top off. I can usually come within a 2-3 gallons of estimating what the next top off will take. I would recommend getting those pesky fuel gauges to work however as they are a valuable clue into recognizing a fuel leak before it would become critical.
Keep plugging away at debugging your airplane as much as possible. I know this can get frustrating but once you get through this process, the airplane will be most enjoyable.
Good Luck...
Ed
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