Took your advice.....decided to fab up some baffle inserts and convert those old "gauze" style cans to conventional style mufflers. Used a $10 piece of 1" aluminum pipe, drilled about 50 holes in each one, glass wrapped them and popped them back in. 3 hours later, we have free flowing exhaust system. Sounds great BTW!!
Question about Needle Jet series numbers- what makes them different? I have an spare set of P4's which I was going to try out, but they are 188. The Needle Jet Application Chart says that is for 32mm flange mount carbs. Are they designed different than the 159 series which I have now- looking at them side by side/naked eye, i do not see a difference? Would they work/fit, or just scrap since I have the 34's?
**Nevermind**- the 188 takes round mains and the 159 is hex. Dangit.