You are right on it....but it looks that the people just don't read what you say!! and I did it in english and german....

Anyway...

I don't know if your muffler has a baffle or not, mine had, and since it had an aditional threaded hole opposed to where the nipple is, I think I got a bug hehe...I had starting difficulties with this muffler. I installed the engine at 225 deg. with the muffler just pointing down... when I primmed the engine, it seems that too much fuel got accumulated in the muffler, because of the baffle, it may get enough fuel to run the engine for a minute or so backwards (it was crazy how long it could run backwards)....and without a starter was always hard to start in that position.... when cold, I could start it with a back flip on the spinner.... It really likes to kick, but the prop stays there and tight.

Since I lost the muffler, I bought an ASP muffler from Just Engines, and I'll test it this week, I hope that I don't have any more start difficulties (I like hand start, actually chicken stick or backflips)... I hope also that the engine can breath a little better and sound a little louder!! it is hard to hear when another plane is around...is too quiet!

You should no have problems to start it since you have access to the carb to prime the engine easily.