Jimmy,

In a tapered-bore engine, you would not want it to run at a four-cycle, rich setting, for the duration on the break-in.
Please read the thread carefully.

So the fact that you cannot make to rich enough to four-cycle, is not very important.
You must, however, be able to richen it enough to spin about 500 RPM less than peak.

If it is not very rich and four-cycling, you do not need to keep the glow driver on, for it to run.

The Thunder Tiger .46 PRO is a $75 ABN engine, which is much less likely than an OS.46FX, to peel its nickel. But if this should happen, a new piston+sleeve will cost $68 - 90% of the engine's total price, not including shipping...


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