RICK S yes they are finicky but work well if you follow below sugestions
1. track voltage at the track must be at 18 volts for all smoke units to function properly
2. after startup allow 10 minutes before use of whistle smoke and blow down smoke reason as per Jon/Lionel retired now the whistle smoke and blow down smoke are a delayed startup meaning they are not fully electrically connected at startup this comes straight from Jon who designed the electronics!
3. blowdown smoke fill area is directly over the rcmc board and if smoke fluid spills onto it poof its toast so add 20 drops and let it sit after the 10 minute wait try it if no smoke lightly blow down the fill tube hole try blowdown again if still no smoke leave cover plate off of fill tube and hold the blown down button on cab-2 until you see smoke coming out of fill tube.
4. this is from Marty Fitzpatrick never- never pickup this engine up only by grabbing the boiler you must cradle the front truck assembly and rear truck to insure no power roller wires or mechanicals are disconnected trust me on this one folks been there done that and the front power roller wire is no fun re-soldering it to its eyelet wire is short and I mean short !
5. find a small plastic bottle with a tip like used for hair dye this can be used to clear meniscus in smoke fill tubes also works to clear tubing for blow down feature.
6. grease the truck drive gears for some unexplained reason most of these engines never seen a grease gun! red and tacky is best it sticks around like no other grease to date that's a fact not fiction.
good luck finding a new in box 2014 vision line big boy but you might get lucky best part enjoy the sounds this beast has 3 speakers one is in the engine it truly is magnificent. mind the 2 smoke stack units they eat bottles of smoke fluid as if it was an appetizer most users will concur on this. as to type of smoke fluid that's your choice lionels smoke fluid makes thick white smoke but personally I use JT's smoke fluid more product for the $ sorry lionel yours is way overpriced.
that's it from me hope you find one and join those of us that pre-ordered it and so far no hint of a re-run far as I know only smoke feature missing is steam cylinder smoke and if you ever have to take one apart you will see no room left for that feature.