Update
Was having trouble with the Bigdog speedo(needle bouncing) and was on my 4 or 5 one, so ordered DD speedo. Had it installed on 7-23-09, but one problem it was defective. It worked but would not cycle through the settings. Called DD and the were out. They put me on backorder for a new one. The gauge was stuck on the 2nd odometer (B). Well after a while 100/200 mile it speedo started to jump around like the BD one. It would sometimes be 10 mph over judging by my dads speedo. Well finially got the new one the other day. Was at local Bd dealer (a good one) getting my 20,000 mile servive and they put it on for me. Well dealer thought the problem with the speedo to begin with was the speedo sensor, but I bought the DD anyway, put the new one and and same thing, in neutral rev up and speedo jumps up to 20-30 mph. They installed a new speedo sensor and it fixed the damn thing. Probabley could of did this and not bought a DD speedo, but it is cool as hell. Put around 4500 mile on the first on from 7/23 to 9/3 and didn't have any problem with it other than the one I had with it to begin with. New one works great. Anyway DD told me when I called them about my first one that they had some that got out that were bad, no problem they replaced it. Was waiting to get all the info with the new one before I posted anything because if I got one here and said mine was bad the "HATERS" would eat it up and post a way.