Martin Posted November 7 Report Posted November 7 Hello, as just posted I bought a Grob 109A. For this winter the plan is to install gap seals from Streifi, a polish the wings. I am shure there must be a lot other measures to improve glide ratio and speed. Do have suggestions ( Bellows on the aileron , speedbracke shafts etc.), canopy seals etc. Best regards to all Martin Quote
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