Questions I have-06 XR650R- 1. The first time I cleaned the down tube screen I found shaved metal and debris around the bottom of the screen. Is this normal for a first time check/cleaning? (Not sure if it has been done prior) 2. How tight do you all go with the chain? Is it a firm 1 ", or a soft 1" more or less for the slack? 3. I know I put about 1.7 qts in the bike, started it and ran it 2 mins, the rode it up and down the street, then let it idle in the garage for a minute, and it only read half way up the dip stick? It seems hard to get a consistent oil reading? Considering I know 1.7 qts went in, and there was not spilage, should I just wait and re check?