JMW-10.5i Tonearm on Scoutmaster

has anyone tried the JMW-10.5i tonearm on the Scoutmaster? Was it a big improvement over the JMW-9 Signature tonearm? What benefits did it bring to the Scoutmaster?
My kid's scoutmaster tried the JMW arm and said it sounded alot better.
I too would like to hear feedback on this, as well as how difficult the mod is. VPI(Sheila) says that it's simply a matter of installing four wooden screws(?) and a metal plate onto the top plate of the turntable. That doesn't sound right.

Ahemmmm (as he clears his throat) I have it from a VERY reliable source that the great HP went ape over the Supercoutmaster with VPI 10.5i arm et al.
I spoke to Harry W. yesterday, and my arm will be coming in the next couple of days. I'll report what it takes to install it on Audiogon. Stan