I plan on doing the front cover so I can get to the timing cover bolts, but due to a medical restriction, the jig is the best I can do at the moment. On that note, I have read of dowel pin failures with associated damage, but have yet to see a post regarding a bolt falling out causing damage. I'm not trying to minimize it, just putting it into perspective. I for one don't want to chance the bolt issue, so will do them when I'm able to do the bolts.