There are warp issues alright, but in my experience the main components all touch where they should given careful encouragement and lots of tape. The Intakes are a poor fit however and worth replacing – Heritage Aviation do a resin correction set which is available from Katana collectables on eBay and well worth inversting in. Can’t comment on the slipper tanks, haven’t got to those yet. It’s no Airfix Lightning but it’s certainly no dog and experienced modellers should be able to get some very good results. Don’t expect Tamigawa, go in with your eyes open and you should be OK. Some reviews had overstated the problems in my view.