I don't know what your looking to do, But "JB Weld" works pretty good at
Keeping plastic together. Elmers makes a clear "mixable" epoxy that works just as well.
if your going for appearance i'd go w/ the Elmers type stuff.
Send it out here. I just had a place here repair mine. It was about 8" long with another crack about 2" that branched off of it. It cost me $30 and after painting, you can't even tell it was cracked (from the outside). I don't know if you remember the two small ones on the front fairing but they did those too, for about $25.
Forgive & forget. Just never forget when I forgive.
you have to be damn good with that hot air plactic gun. it is easier to expoy it . I have been doing bike plastic for 12 years now . on my bike and others and i just expoy it ( DURAMIX 4040 or 4049) I had a hot air plastic welding gun and sold it after finding duramix. Find that it is a better bond . plastic welding i found that it gets brittal on both sides of the weld and the expoy just flows out as one. fixing a buddies zx7r right now out in the shop.