COULD be that its lift power is not enough. Read manual and adjust 5 i1 b+ N: F/ g" c 0 D& D, v* f( P9 {5 n7 b7 }8 T# G% g& i9 o2 k8 R2 y$ A
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U can also call Robert garage door 7807073706. Really nice guy. We asked him twice . U an also try ask pay him less money than what he asked. Good luck