Generally around the firewall, cheek cowls if you have them (making this apply generally to ARF,s rather than specific to yours) and any other place that has no iron-on (or cheap stick-on) covering.

If you have a screw penetrate the covering... put the screw in, remove it CA the hole, let the CA cure about 30 min then put the screw back. CA DELAYS fuel penetration. (its not fuelproof... nitro disolves it... but nitro evaporates before the fuel penetrates most times. )

Note: A CA hinge can be removed by soaking the hinge line 2 days in raw fuel. HOWEVER this doesn't say CA hinges are bad... I've had CA hinges last over 3 years (the longest any model I have had has survived..) I have heard of CA hinges surviving 10+ years. (but not many of us can "find" a plane that doesn't have a "shorter lifespan" than that. Lawndarting isn't good for the shelf-life)