I am trying to do a cover of One by Metallica, and in the last part when the guitars are driven rhythm pretty fast (if that's even considered fast.. ) my right hand starts to hurt. At full speed i am skipping some notes, but at 5 bpms slower i can somehow full all the notes, but i am on the edge of fysichal ability - my right hand basicaly at the end feels like stone, i need to rest 5 minutes, than i continue. i have all parts in my head but the right hand is somehow killing me from achieving that last part. Should i continue, i am already building a speed of that particular song about a month now, and i achieved somewhere 7 bms faster speed from then. i am working on this cover about 1 and a half hour per day. Today it happens that my hand started to hurt on slower speeds than 2 days ago, so i am a bit frustrated to be honest..