Now that i have a CZ-21. My detector lineup is complete. I would like to know if there is any inherent faults of the 21 ? I have an Anderson setup coming today complete with stiff lower rod. I really like the Anderson with a Tesoro setup i had. Is there any preventative things i should do to the 21? i know about the gasket. I ordered an extra and have a jar of dive silicone left from my tesoro. I no not to over tighten the batt screws. Any mods or tricks you guys have?