Got some of the components through and got to work today. Sorted out a majority of the signal path resistors, the riaa op-amp, a few of the remaining electrolytic caps and some of the new film caps. The difference in sound already is actually quite surprising. The low-end has really picked up a lot. The mids and highs don't sound particularly different perhaps "slightly" more detailed but not a big difference like the LF. The riaa is another incredible difference (probably down to the op-amp) the brightness and sibilance is gone and it sounds almost perfect already. (even without the new film caps which I'm waiting for.) I found some mistakes in the service manual as well. C202a/b are 4.7uF not 47uF.
Some pictures for those interested.
PSU Filter caps
Main filter cap decoupling (EPCOS 305Vac 100nF were supposed to be those wima FKP 100v 1nF caps but they were way too small)
RIAA, BurrBrown OPA2134 fitted via a nice socket.
Amp, New Wima FKP caps in place, the silver mica in place of the old ceramic and some of the metal film resistors. Not sure if i'm going to go the whole lot on the resistors.
Switches, All metal film resistors done and vishay MKP1837 in place. (not the neatest here due to their size)