I think post #7 is talking about a glow plug adapter to go into the spark plug hole. Yes, CH Electronics does sell them; I bought several from them.

I wouldn't worry too much about burning too much methanol. The way I've seen my Ryobi 4stroke sip fuel, twice as much of VERY LITTLE is still VERY LITTLE.

I think you'll end up saving some weight and gaining a good bit of power, if done right. I've converted several weedies to glow, and they've all run well and end up significantly lighter.