Well, thanks to landeck, I got adventurous and went ahead and cut the cowl. Pretty good size hole as expected. I was able to leave the back ring of the glass intact. It just takes holding your tongue just right to maneuver it into place. Swapped out the prop while I was at it. We'll see if this one works out. Should drop my static thrust at idle a couple of ounces. (still need to trim the bolt for the prop hub a bit... will get to that another evening)

Sorry to hear about the inadvertent ground acrobatics. My battery is way back in the tail as well. Between the same formers as yours. Sounds like my battery is a little heavier as I didn't need to add the extra lead.