The Corgi boys will moan at you if you do and cite gas safety regulations owned by the HSE in the UK...
http://www.miketheboilerman.com/gsiur.htm
(may be current - may be out of date)
I had the same problem on a Profile100e but it was not the gas valve... turned out to be a weak pilot flame and an insufficient signal (the pilot is burning well) for the PCB to ask the valve to open.
After cleaning dirt from the pilot injector it ran like a champ with the pilot flame big and beefy.
Unable to answer your direct question though - sorry...
Peccavi
February 2009