Could be cam chain rattle you're describing, it would be more noticeable in this cold weather but should go away once the the bike/oil gets warm.
How many miles has the bike done out of curiosity?
Look it up on here, there's plenty of info about it.
If you look at the fins on the sides of the engine you'll see a drainage hole in the middle of them, get some tubing or wire and "stick it up 'em" and clear any blockages you may have around the top by the spark plug end. Any blockages will make water sit around the plugs and cause rust.
I would seriously advise using some compressed air to try and clear any debris that may be sitting around the spark plug area before you attempt to remove the spark plugs, otherwise you'll get a load of really unwanted crap dropping down the holes into the engine.
Have you ever changed your air filter yet?
Revs dropping on acceleration could just be a cold bike, blocked air filter, air leakage or even carbs may need balancing, that's a bit more difficult to pinpoint without seeing/feeling it to be honest?
How many miles has the bike done out of curiosity?
Look it up on here, there's plenty of info about it.
If you look at the fins on the sides of the engine you'll see a drainage hole in the middle of them, get some tubing or wire and "stick it up 'em" and clear any blockages you may have around the top by the spark plug end. Any blockages will make water sit around the plugs and cause rust.
I would seriously advise using some compressed air to try and clear any debris that may be sitting around the spark plug area before you attempt to remove the spark plugs, otherwise you'll get a load of really unwanted crap dropping down the holes into the engine.
Have you ever changed your air filter yet?
Revs dropping on acceleration could just be a cold bike, blocked air filter, air leakage or even carbs may need balancing, that's a bit more difficult to pinpoint without seeing/feeling it to be honest?
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