Don't go cutting anything off the wing, would be interested to know what engine you have in the plane. I flew one of these for a while and played around with a couple of different motors. With an OS 46AX or a Thunder Tiger Pro 46 it flew and landed without problem, with an OS 46LA in the front it was different to fly and land. With a low wing you have to fly it all the way down you can't just pull the throttle off and float it in. Don't know what sort of spinner you have but if you have a plastic one replace it with a solid aluminium one to give the front end a little more weight.

These are a good plane, if all else fails take it to the club and have an instructor or very experienced pilot have a look at it, they may be able to come up with other ideas