I'd avoid the ADC ALT-1 arm. I had one decades ago and wouldn't recommend it. I fitted it to an AR XA and it didn't sound as good as the original arm modified being re-wired and an ADC LMG headshell fitted.

They were cut specifically for the 3009 s2 and 3009 s3, or most of them were. You could also order them cut for the dynavector dv505.

Im sorted now, a deal has been struck that involves me buying and doing a complete rebuild on a rega r200 which will suit a lower compliance cart, in exchange for a mayware formula 4, which isnt really suited to the cart in question

Alot of the jbe's were sold with the f4 as a dealer fit so it would be a period correct arm for it too

Cheers ant

I love saying this but there was no SME 3009,S3.. Its SME Series 'III' A totally different design to the '3009'..

btw: The Mayware is suited. I have a mate thats using it with a demanding 'DL103'

Ive had 2 f4's on it before, its had the sonus formula 4, that one had a kink in the arm tube so that the cart was higher up wrt the pivot point, and the mayware f4, this will be the third one.
The sonus was a pain in the arse to get the azimuth right on because of the kink, and had no rider weight because of the kink too so the vtf and azimuth were both set by the counterweight. Was a complete pita to set up. Made even worse by the fact that the tube was not sat square in the housing. In the end I had to make a jig to reset the tube so it was square in the housing and the kink was vertical. The mayware version is much easier but is still a finicky bugger.

I also used the original mayware I had on a technics sl150 that was a complete pile of crap and never kept speed even after a complete recap and a replacement ic that I was very lucky to get my hands on.
The f4 was fab on the jbe, i had a sonus gold in it at the time.

Mission 774 original not the lc one 😉