I'm building a 1/72 Heller m4a2 and it gives the option to use the stamped spoke or the actual hollowed out wheels. I'm using the hollowed out spoke version but it only mentions to use the stamped idler.

Should I be using the matching, non stamped,idler I see on the sprue or were these combined typically? When were the real spoked idler used ?

Thanks guys - just don't want to assemble and realize it's wrong.

I guess you've got to find reference pics of the tank you've decided to build...

Taking a look at Chars-français website may help (providing you've chosen a French Sherman of course ) :

http://www.chars-francais.net/2015/index.php/classement-individuel/m-4-sherman

H.P.