hello,i have 2 mth camelbacks which I run on my fathers layout.these engines are cataloged as to run on o31 curves,however these two engines crawl up and over the o31 curves,derailing. has anybody else had this happen?the first engine,lackawanna camelback w/ps2 I eventually got to run through the curves by spreading outside rail of lionel o gauge tubular track,2nd engine,erie camelback w/ps3 does the same thing on the same section of curve I reworked,i recently replaced entire curve with new lionel 031 tubular track and had no success,i am now going to replace curve with gargraves o32 curves,does anyone else have this issue or are these engines designed to run on 042 only?any help would be a blessing ,THANKS IN ADVANCE
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