Patrick hi,
Can you find out the brand name of the ballast?
I too had that problem of discoloration. It was Woodland Scenics medium ballast. No matter what you do, it changes color when applied with the PVA/water/detergent/meths mixture. Decreasing the PVA amount cured it a bit but increased the setting time.
Baykal
Can you find out the brand name of the ballast?
I too had that problem of discoloration. It was Woodland Scenics medium ballast. No matter what you do, it changes color when applied with the PVA/water/detergent/meths mixture. Decreasing the PVA amount cured it a bit but increased the setting time.
Baykal