You guys are the best!!!
I will absolutely try the hacksaw blade.  I was going try an X-acto saw but the blade is too narrow to do the whole job.  I will deepen those frogs and see if it works.
Thanks for the help.
As for the GP-20, it is a Model Power and in the process of cleaning the wheels, I find that all eight wheels pick up current from the rails.  So, deepening the frogs is the answer.
Unfortunately, the crossing is smack in the middle of the main line so there's no hiding it.  It will be inside of a mountain and I am going to have to build an opening to access it for cleaning or get a really good track cleaning car.  We'll see.

Thanks again to all of you.

Merry Christmas

Seqimbill

I am having problems with Bachmann EZ Track.  The track itself is fine except for having to file the rail tops at the joints for smooth running.  What I am having a problem with a model 44440, 30 degree crossing which I bought just yesterday.  It fit perfectly into my small layout.  Then I gathered all of my locomotives to test how they would run through the crossing. . . . .  They don't - happily.  I expected that there might be problems with short wheel base (0-4-0 and 0-6-0) switchers.  However, my 4-6-2 Pacific and my GP-20 have problems also.  The problem is either partial or complete stalling, especially at slow scale speeds.  In addition to the stalling, the engines tend to hop and derail about every second or third pass.  Since the crossing fits so well in my track plan, I don't want to return it.  I would like to fix it if possible.  Someone suggested that the frogs might be too shallow and that the wheel flanges may be bottoming out as the loco passes through. Can you help?       Sequimbill