The glow plug wire breaking is why a lot of people get their crankshafts balanced. Stu Barr is really up on this. I think he worked on this issue with Ron Bouche.
For nitro I have always used the 18 lb shear isolators which strike a nice balance between vibration dampening and durability.
I am kind of sold on the new CMB design.
The hull plug is coming along pretty good. Posted some photos on the General page in the "what's everybody doing" post. Sanding and filling all the insides of the boat to radius all the intersections now. I could be a safecracker I have sanded so much...
Is it a 4 port or a newer version Mike?
I was in Ellensburg yesterday visiting my grandsons whose parents own the property right across the road from the gate from Irene Reinhardt Park. Man, I was sure itching to race!