Proper conformal coating ( i used clear and red CRC conformals in the early days ), surprised to see many through hole components on the above pcb, cut pigtails being sharp reduce the conformal coating thickness at any sharp angles ( flow away during curing ).
The pcb appears to have a basic conformal coating, though when thin and age deteriorated moister for one can penetrate the edges and lift the conformal coating due to galvanic reaction(s).
Ignoring customer feedback never augers well for any manufacturer, or parts supplier. Mentioned prior i believe, perhaps.. bought a Mazda V6 JDM ( Japanese Domestic Market ) HD series motor for a very good price, shipped. 12 Days i could not get the "pulled motor" from working vehicle to start ( coughing yes, run no ). Quickly worked out the ignition timing was out by around 40 degress. Contact wrecking house in Victoria ( Australia ), no reply... several contacts, no reply. Finally i clocked the root cause, gilmer sprocket on the crankshaft was on backwards, which is also shown backwards in the genuine factory manual ( tah to Laverda factory manual and Ceriani valving shown incorrect order, was alerted ), few other issues ( i nuked the "igniter" ) corrected the quad camshaft to crank interval.
Runs a lovely motor to this day. What were the blokes in Victoria hoping to achieve by ignoring me?? Never know, suspect the motor had been installed, undiagnosed problem, put motor back onto ebay and let the mug buyer contend with the issue...did let them know via email i had sorted the problem, just to rub it in. Was a difficult issue to resolve as i had assumed it had run prior in Japan. Flexibility in thought process needs to be close by at times. j