Picture of Freq change ?

[yoshi]

I would like to change freq on my bit char-q. I read that you just have to change the Crystal on the controller and tune something on the pcb.

I know how to change Crystal on the controller but I'm unsure how to tweak the pcb. Does any one have picture of how to do it?I read that it's under the wax on the pcb but it would be great if someone has picture before i do it.

Can someone help me.