rjx muffler ..... need help

[sagiadir]

i just recived my rjx muffler and i noticed that that
the muffler header is to thin from the engine.....
is that ok ? or i need to buy the kasama header ?
here is the picture.....

http://helifreak.com/attachment.php?attachmentid=271291&stc=1&d=1323077704

[Rotorholic]

No problem, mine is same way and is awesome power. The RJX o-rings suck though. Use the hatori or rex H5 orings.