OK, I'm an absolute noob. Just built my first couple of rockets and keep getting engine overheating. Using the jumbo fuel tank and mainsail engine. Looking at the stats all the engines have similar heat characteristics, so I was stuck. Had a look at some tutorials and by chance I saw a comment that the mainsail overheats when used with the jumbo fuel tank - but no reason given. Is this a glitch or is there a reason? If a reason then please share! thanks M