Regarding the link, pardon my 3:30 am stupidity. Though I never have liked those rules on other forums (nother time/place) And No no no, only the first part of the article was about the G gauge. The writer came in and was in awe with the G trolley. It was handbuilt from wood. The 29in part, and the fishingline was in regards to the HO trolley. All I meant was for the top part. There is a nice picture on Fred Rogers Wiki page of the HO layout too, in front of the guy.