Your at the limit for sizes Greg,Try a skip tooth as it cleans out lots of wood as it cut for you.Maybe even slowing down the machine to minimize the heat causeing the blade to bend and lose it's tensile.Thick hardwoods a tough for the scroll saw and cause unwanted wear on the machine.It really shortens the life of the machine.Cut as much as you can with a band saw on the outside cuts if you can which will give a little more life to your saw,Mikes has a blade called "the blade that could"That will and is for the hardest woods you'll encounter.I used plenty and can't keep them stocked.There not the best for tight turns as they are 1/4" wide. p.s you could, but a band saw blade and cut 5" pieces and use those in your saw if it's able to hold them.There's times i use them on my dw788.they come in1/8" sizes too for scrolling, which may help you ,but again tight turns are not good.Another thing you could do is go into the turns and widen the turn so your blade can turn easier I do this a lot on coin cutting as the heat build up when doing tight turns will break the blade everytime if i don't.