I like that Uni air filter mod! I will have to try that sometime. I actually find trashed equipment all the time, that's the reason i'm on this site. I found a vintage Troy-Bilt "Mini" cultivator with a Tecumseh TC200 32cc 2-stroke, just sitting underneath a tarp near my house. Sitting next to it was a Bolens MTD/Ryobi BL410 31cc 2 stroke cultivator. They were both frozen solid and the Troy-Bilt was missing its fuel tank. I completely tore down the Troy and all it wasn't terribly corroded, all I did was dump some MMO down the cylinder and broke it free. I did disassemble it though to run everything on the wire wheel. The tank was missing, and believe it or not, I found it buried in the mud about 3 feet from where it lied. I opened it up, and I'll tell you, I get old equipment running all the time, maybe stuff that's sat for 20+ years, and I have NEVER smelled stale fuel like this before. It was so bad I had to take it outside and flush it out. Turns out it was still an okay tank that would hold, so there was 40 bucks I didn't have to spend. The carb was there too, and this thing was a major PITA. It was one of those small Tillotson HU series that are similar to modern Walbro WT carbs, and made made it strange was that it had a "sail governor" to monitor the RPMs, like the ones you see on Briggs engines mounted on generators and air compressors. Had to buy all the tiny little meticulous springs for that. Rebuilt that funky carb, new fuel line and plug, and off it went! The Bolens was extremely corroded, so bad that it rotted out a hole in the crankcase. Same story as the Troy, I got it running too, but I ended up replacing the engine with a Craftsman 31cc Brushcutter engine. Both of these were apparently bought at a yard sale probably 17 years ago, and they just sat there, and I never noticed them. There's free junk everywhere! Try to grab as much of it as you can!