I'm planning to get another Ever Ready brush to fix up but the last time I restored a brush I may have made a little heavy though it turned out well (I can't remember what I used). I have a Razorock resin handle so I know that's a good weight for me, what filler would simulate resin the best? Would a 2 part epoxy work just fine or do I need to find some specific kind of resin. Sorry if this is a silly question, I may be overthinking this.