no... keep the landing gear bolted on :-) but you can epoxy the block from inside since that is generally a weak point on ARFs though i have to say none of the calmatos i've seen have had a problem with the main gear blocks.

it is an easy flyer and the only time i've had trouble flying one is when someone was yelling for help because he couldn't get the plane down. we fly off pavement so landing speed is important. he hadn't adjusted the engine idle and so the idle was quite high. couldn't cut the throttle either since i think there was a leak in the carb (GMS .47 engine that wouldn't quit and until you literally threw in the towel). he had taken it around half a dozen times and couldn't get it to stay. i had to take it around twice to get it slow enough to land safely.

many people try to cut corners before their flight. if a plane won't idle low, that's okay... but make sure it can shut off. it is critical to safety. if the engine is running inconsistently don't just make sure it doesn't die at full throttle and tell yourselves to make a mental note not to move the throttle too quickly. so many "accidents" could be preventable.

the calmato is an excellent plane and so easy to build. it was my number one recommendation as a trainer. that has since been replaced by the world models raider mach 1 because of price.