Tom,

I asked the very same question a couple months ago.  I even contacted MECOA who produces a CL version of the 61.  Unless something has come available in the past 2 months or someone else weighs in with an answer....I'm afraid you will need to mill the sides of to get the needle assembly to fit.  MECOA mills the sides to get their valve to fit properly.  If you need parts, for that 61, MECOA has them.  WWW.MECOA.com .

Link to my original post   http://stunthanger.com/smf/index.php?topic=6315.msg52082#msg52082

Thomas

Hi, Tom,
   I found a long ST style NVA in my junk box which fits in my K&B 61, don't know the source.  Might contact Randy Smith, he can usually come up with a good solution, better than machining.  Also, I'm told that a Merco NVA will fit in the K&B, but have no hands-on experience. The K&B 61 runs pretty well, I'm impressed!  Hope this helps...

Thanks Bill,

That would be a relief if I don't have to mill the housing.  I contact Randy and search around for a Merco.

Tom

HI

I was trying to find  the exact diminsion of the case  where the spray bar goes thru
If it is .720 or less  the PA  60  NVA  will fit
If it is up to .750 wide the ENYA 60 NVAs  will fit
I will try to find others

Randy

My Gold head which should be the same case is 25/32 nds or .781

An ENYA needle valve assembly works perfectly for a K&B 61.  You will not need to machine any of the housing away.  Our moderator, Randy Smith sent me one and it fit perfectly.