I didn't have major problems with the LA.
I don't have a problem with blowing into the return line to get it prime

If I use a chicken stick.
I had the rear needle pionted straight up on my avistar.
I Took it out of a canel even . Took it all apart to flushed..it runs fine
The La I have has those not so thick rear needle metal brackets. They vibrate
but don't effect the engine.
I should have used blue loctite for the muffuler screws thou