I applied some coating resin to a part about 2 weeks ago.  and even now it is still slighlty tacky to the touch.  Weirdly the excess resin in the mixing pot seems to have cured fully and is not tacky.  I used a digital scale and am pritty sure I mixed it 2:1.  The part is made from glass cloth and EL1 laminating resin.
Any idea what could be the cause of the tackyness, and any way I could salvage the part?  It took me quite some time to make the part so I'd really hate to have to toss it.