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.

Even though I was pritty sure I mixed it right, perhaps I accidentally mixed it 5:1 which is the ratio I used with the west system resins I've been using for years. I use a digital scale which is accurate to 0.1g so I can get even small batches accurate.  I think I may try coating a few bits of scrap wood to see if I can get it right without trashing any more parts.