Hey, why did Infinity go out of business?

I have all 3 engines. The .21,.27 Infinity and the .28 SH.

I find the Infinity engines to be quite good. The .27 has more midrange punch but top end between the .21 and .27 seem similar on the 2 Bazooka buggies.

The .28 SH is also good but I am on my second engine prematurely due to the idle needle tip breaking off and causing the throttle to jam open causing a runaway. The .28 screams at the top end. I would say the SH revs higher but I cannot say it puts out more horsepower or torque due to the fact I have the SH on a truggy compared to the buggy.

Tom