Thanks for all your replies.
Looks like my best bet is to speak to Michell.
The reason why I bought the Tecnoweight is because even though I find my P3 has plenty of bass energy, its lacking in bass finesse and resolution. I was hoping the TW was sharpen this up a bit. Using it with the dial set to '0' had no effect on this problem. So, if I can't use the TW as intended (no spring) I'm rather stuck.
Surreptitiously it has made me set up a P5 again I bought a few months ago. Initially I didn't like it but I have just tried it with a tighter fitting O ring counterweight and bizarrely the sound is more to my liking!! So I think I will sell my P3 and keep the P5.
So it looks like I will be using an RB700 from now on. Thing is I don't want to crack the stub off this RB700 only to find I'm in the same situation again.
tomytoons wrote:I use the Techno weight on an RB 700 and it works fine.
Forget about balancing the arm. I NEVER balance it. It is set all the way to 3.5 or past on the dial.
I go from there and set the "vtf" vertical tracking force to my needed 1.8 grams using a digital scale moving the weight carefully. I was using the smaller weight because my SAE1000e cartridge is 4.8 grams total weight.
Just forget about the balancing and set the correct VTF with an external scale. You should be fine.
Can you tell me how close the weight is too the tube??