i took a look at the cad file & it is majorly different to Peter's PM 60.Thanks David, as you suggsested & i found it.
that's a big saving on the costing chap.
for any one else that missed it like me it's page 38 post 741
It looks like the PM 90 to me less measurements.
i think it's a no go,
back to the £160 prospect i guess.