If it's chrysalled, IMO all you will achieve is making them worse...
They go surprisingly deep. I reworked an old 60# Elm ELB into a 30# bow by taking down the chrysalled belly, they went about 4mm deep and I never really got 'em all out.
I think chrysals are natures way of telling you to start another bow 
and be thankful it just chrysalled and didn't blow 
.
A chrysalled bow will still shoot but is always going to be a bit puddingy...
Del
I was mid way through an ash bow recently and havent used ash in ages. Lately i have been lucky enough to work pretty dense woods such as cherry and yew. Ash is not cherry or yew.
It was a bit of an expeiment so i went pretty short say 64 and only about 1 3/8 wide stiff handle and reflexed the tips.
Right from the off i was starting to get early set so rather than take down the weight i decided to heat treat, that worked for a bit.
Then the set kept coming back, tiller was ok but something was wrong all the way with weight dropping all the time, only a few lbs but enough to say some thing was wrong.
Eventually I started to see small chrystals and eventually it got worse on both limbs.
Once i see chrystals i know it all over and its only worth proceeding for experiments sake.
Basically I did everything wrong, too short, not wide enough, too higher weight for the design.
Another good idea would be to work under a good light so very early chrystals are easier to spot so changes can be made to maybe save the bow.
