Micro Seiki MA-505 variants - any oracles around?

Now that this thread has been revived, I wonder whether anyone has knowledge of the origin of the L07J tonearm that was supplied with the Kenwood L07D turntable. The L07J has a look to it that has always reminded me of the micro seiki MAX tonearms. Since MS is generally credited with designing just about every Japanese tonearm, except maybe SAEC, why not?

@lewm 
If I were a betting man I'd lay my money down.

A few years back I delved deep into the whole Japanese 
network of who built what to support the electronic market.

Quite an eye opener if your not familiar.

totem, Got some references?  Thx.

This thread has only been dormant for a couple of months, so why not bring it back?

I recently acquired an MA-505L, and mounted it on a Technics SP-25 with the standard SH-15B1 plinth.  With a 270mm spindle-to-pivot distance, the arm *barely* fits under the dustcover...naturally only when the arm is  docked.  Sound is quite good.  I think there is something to this 'reduced tracking error' thing with longer arms ;)

I'd love to find more information about the various headshells for the 505 arms.  I'm aware of the H-303, H-202, and even the H-40.  These all have a similar design/shape, with perhaps only the holes drilled for weight/balance being the difference?  Surely they are all made from milled aluminum, and only the number of holes drilled is the difference for weight.  I see a bit of variance in listings on eBay.  

The headshell weight is particularly critical with the longer 505L when trying to obtain zero balance.  In order to get my current setup balanced, I had to use the extra counterweight on the back of the arm, but also tack a US dime to the headshell on the front - not ideal, but it works!

Uberwaltz, Hi- I built your table! Was looking up the 505X which I was not familiar with and there you were.
Hope the 401 + 505 combo is still making you smile.
I love the 505 because it is such a flexible arm and looks great to boot.
Best, Dave