LOL I don't know why but that hopefully cracked me up now. I just can't stop laughing. Sorry

Using Elevator too keep the plane flying level during inverted flight is normal. I think some planes, as mentioned, may need more that others.

Yes be very aware when changing the CG. Just for a stupid sample - when I first started flying my Stryker with the LIPO (way ligther) it was WAAAYYY tailheavy. It was pitch sensitive like crazy. In 1 minute of flight I almost crashed it nose first about 9 times (this is not a overstatement). Everytime I saved it a few centimeters from the ground - it was horrible. I did manage too bring it in where I want too and put it down (WITH A LOT OF TROUBLE AND EFFORT) on the grass.

I know it two way different planes, but just saying the CG plays a big role when flying.