Sometimes it can be, like when there's a big ground braid that can't be removed. Looks like you got it in fine though, that's the important part.
Mine is an eletromechanical, so I had those two bolts, but the wiring was just two harnesses that popped right out. The table wasn't light, but while waiting for my friend to get over here I got impatient, and just grabbed the playing field and box and ran in the house to play. Real bitch was keeping the front door open while coming in with the playing field on my own.