Re: is my chain to high on the back sprocket
drilling holes through frame not the best idea. The frame can and has cracked in half at the spot you drilled the hole. Ditch the stock POS chain and grab a 415H from your local bike shop. Ride safely
Live life as its your last day... it just may be
Learn to do it right or how to fix it later, quicker to do it right the first time.