andreas,to correct it your self,the easiest way would be to sand the finish down by hand.if i was doing it,i would start with,120,or ,240 grit sandpaper,and sand the finish off by hand.after i was satisfied that everthing was down to bare wood on riser and sides of limbs,i would use tru-oil for a new finish.apply a coat evenly using fingers to spread smothly and evenly,let dry,takes about 4/6 hours,sand lightly,repeat 6/7 more times,after the last coat is applyed buff it out with 0000 steel wool. i use tru-oil for the finish on the bows i build,and have used it on aprox.50 bows with no problems.i have also used thunderbird,its an excellent finish,but imo,the tru-oil is as good and not near as expensive.regards,robert.ps,if you don't have acess to tru-oil and want to try that route i will gladly send you a bottle.regards,robert