Robert I tried to post a couple of pics, but I kept getting up loader full message even though the pics were only 37kb and 35kb. Nowhere does that add up to the 128kb allowed per post.

To all who responded to the original problem, the nail polish (actually I used some black silicone sealant) fixed the problem.

Thanks,
John

Robert one thing I forgot to mention, I also had to remove the existing tender weights, so I used stick on weights in the four corners of the tender to compensate.

John

Robert, it seems funny, but both of mine will do cross-overs with no problem.

In regard to the sound, I removed the Bachmann board completely from the tender labeling the wires as I removed them. I still had to trace the wires to make sure I knew where they all  went . This allows a 27mm high bass speaker to fit between the tender top mounting posts.  I drilled holes in the tender base within the speaker diameter to let the sound come out from the bottom of the tender.  After fastening the speaker with a double sided tape gasket, I installed an NMRA 8-pin plug double checking each wires position.  The Tsunami is still a tight fit, but it does go in there.  The tender shell needs to be sealed from the inside. I sealed it and then held it up to a bright light to find any places I missed.

Make sure you test run the installation using the dummy plugs that were in the board you removed before installing the Tsunami decoder, it's a very expensive fuse. 

The installation is not for the faint of heart, but the result is well worth the effort.   

John

Gene, Yes it is the PRR K4. It looks like it is hitting the front edge of the cylinder, but when I look at them both upside down,  side by side they both touch the cylinder at what seems to be the same angle.   I was just wondering if this was a know problem, or just an oddball one.
The nail polish probably will do the trick.  I will give it a try.

Thanks for the replies,

John

Hi, I bought 2 Spectrum K4s at a local train show.  Both run great on straight track.  I added Tsunami sound to both and they sound awesome when double-headed.  The problem I am having is that one of them (3750), when going round a 22" curve, the front truck frequently shorts to the frame.  The other (1361) has no problems.  I can remove the front truck and both run great, but it does not look right.  Swapping front trucks between the locos has no effect, 3750 still shorts to the frame.  Has anyone run into this problem?  Any ideas?

Thanks,
John