I don't think the lack of idler tensioners on the PIV should
necessarily stop you- you should get the tank you want . I have four Taigen IR's and have had a blast with them, a family friend in the "bubble" comes over and we battle on the front lawn. All four of my Taigens seem to run a slight little differently, all have strengths and weaknesses. For example, sure the PIV doesn't have the track adjusters but it has a "solid metal" chassis as opposed to a "metal" chassis (as quoted from Taigentanks website, I think they mean 2mm thick metal with almost no plastic but not sure). The Shermans likewise, mine looks beefy. I don't have a PIV, but do have a PIII with modified gearing, and I like the look of all the bolted on extra armour plate, and the fact that it maneuvers well.
So maybe research the diffs, get the tank you like the look of, run it, take it apart when needed, have fun.
