Just plain crazy about my Flyzone Playmate.....BUT, after many, many flights(and wrecks!)i ordered a motor/gearbox to replace the one that came with the plane...when i removed the original from the plane, i used an X-Acto knife to slice thru what appears to be a white, caulk like flexable adhesive that was used to "stick" the motor/gearbox to the nose of the plane...would anyone know what the white stuff is?? I just want to be sure not to use something that could attack the foam when i install the new parts in the plane....if acrlic/latex caulk will work, that would be fine with me! P.S. Working on these little planes is VERY unique.....my poor EYES!!