I purchased my 2000 Duke II used back in 2007 and have recently been having charging issues. I noticed the battery started sounding weaker and weaker with each start up. I figured since the bike sat for so long at the dealer that the battery was dying. So, I purchased a new Yuasa maintainence free and it seemed to fix the problem for a while. Now, I am constantly having to keep the bike on a battery tender when I am not riding because once again the battery is weaker with each start. I checked the system with a voltmeter and it is only producing around 12.75 volts at 5,000 RPMs. Now, I assumed it was the stator but the so-called KTM expert in my area believed it was the rectifier so I changed it with no luck. So, before I go out and buy a $180.00 stator has anyone any other opinions, options or info as to what could be the issue? The bike only has 12,000 miles on it.