I have a DA85 in an Aeroworks 33% Extra 260 and it runs fine. No shaking. Have you tuned the engine? You may have done so, so please don't take this the wrong way. I thought I would ask since I recently met two people who had a DA85 and a FPE 5.8 and neither of them had tuned their engine at all. They both said they left the needles at the factory setting.... I usually don't butt into other people's business and let them do what they want with their engines, so I think I just mentioned that it is normal to tune these gas engines and they may want to look into it...


-Ed B.