I just finished a TTG reefer. Fortunately they provided the option of preformed ladders in place of the grab irons which would have required drilling tiny holes in the plastic using a template that, itself, wasn't drilled completely through. The details add a lot to the overall authenticity of the model but I agree with the reviewer who confessed to the complexity and aggravation of dealing with bits of plastic so tiny that even tweezers won't hold them, that is, if they can be removed from the sprue without breaking. The directions are not as clear as I needed. The underbody details and the reefer hatches were especially troublesome. Also, one thing Hobbylinc failed to mention on the reefer is that couplers are not included. It looks as though they are on this boxcar. If the kit is assembled in short sessions the effort is tolerable and well worth the time. I previously submitted this review for a boxcar kit by mistake. That kit was far less complex and detailed as this one.