Hello and thanks everyone for their posts. Very interesting.
always had a soft spot for the Chipmunk. Had a Goldberg Chipmunk many years ago and finally got a CMPro built up plane for a song. Real cheap. power is dle20 cc motor . all high end servos with smart switches and regulators with two life batts supposedly Ready to Fly. All that for $425. All in brand new condition. I took it home happily and few days later decided to charge the battaries and prepare it for flight. To my surprise I felt that the motor swings a little when I lifted it from the ground. looked at it carefully and removed the cowl for the first time. Wow! Discovered why it was so cheap. The plane took a hit up front and pushed the motor against the fiberglass firewall and brok it on the top end and somewhat on the sides. The seller tried to bond the breakage with epoxy and did a very poor job. It was all covered by the cowl and I never suspected that something is wrong. Needless to say that the seller did not disclose the damage to me.