Still trying to replace Lynch Fool Proof I broke 2 yrs ago. Bought Lynch Lady Deluxe. Call is squeeky, like not enough friction between lid and bx. Sanded lid with 120grit emory cloth. Seemed help little. Do I just keep going courser with sandpaper till it sounds good to Me? Aint gonna carry it like it sounds now. Have also tried 2 different kinds chalk. Any advice?? Thks