You can use a heat gun to remove the stab. I've done it with success. The problem is that it takes an awful lot of heat to soften the epoxy enough to get the stab off without breaking wood. You'll burn the covering right off the piece by the time you gte it hot enough. You can even burn the wood if your not patient enough and try to move the heat gun too close and speed up the process.

I had to cut the covering off the stab, and the fuse. Then use 2 heat guns, and a friend. It took better part of 30 minutes of constant heat on both sides to loosen it enough to pull off.

Then, you gotta get the rest of it off the stab and fuse before it gets stiff again. Otherwise, you'll never get it glued back on with all that gooped up epoxy on it. Lots more heat and plenty of acetone soaked paper towes and elbow grease.

Best thing to do it just keep the trainer. It's not worth selling. I just can't see a trainer being worth that much, and by the time you put all that work into stripping the covering--removing the stab--then recovering it so that you can actually sell it to the buyer without him having a cow over it--it's just not worth the time to ship it.

Too many modelers solo and then can't wait to get rid of the trainer. They are missing out on some great fun down the road. Keep it and put floats on it. Put skis on it. Tow gliders with it. Some day you will crash the whole fleet, and won't have a thing to fly for a month or two. That trainer starts looking awful good right about then.