OK dont get at me for expressing an opinion, and no it is not modelling when one buys a product 'Ready to Run' and it does run properly until you fix it , would you buy a car,camera etc. that you had to take a tool kit to before you could use it?
I think the L1 is a superb looking model but there are enough instances of the pony truck derailing for (as far as I am concerned) it to be a problem/flaw or at least a poor design. When it happened with the Bachmann N1 they acknowledged it and fixed it, I was offered a full refund or redesigned model.
We are in a period where models are getting better and better (and prices are rising) and I can understand folks being reluctant to criticise the manufacturers who are doing us proud, however if I purchase a model I expect it to be fit for purpose without having to drill, glue, reposition etc. if by bad luck I get one that derails, I would love an L1 but I am not prepared to spend money on a model that may or may not run well.