Bike is an '07 Road King with a Stage II 103" kit and SE 255 cams, done last year. The right thing to do of course would have been to check the crank runout while doing the Stage II kit. But that didn't happen, and just recently whilst getting some diagnostic work done at the local dealer they said they thought the engine seems to vibrate a little excessively. Doesn't seem any different to me than when it was still a 96", but now I am concerned, especially after reading the thread about multiple twisted cranks with '07 and '08 bikes. I am leaning towards getting the runout checked (or checking it myself) just to see if there is any reason for concern. So if it turns out that the runout is excessive, what are the options? Here is the way I see it: 1. Sell the bike immediately and run. 2. Pull the engine, disassemble and send the crank away for trueing and tig welding (like it should have been in the first place). Bore the case for 4.00" 110" cylinders at the same time. Cost: likely under $1000, if I do the R&R myself. 3. Crate shortblock assembly PN 16200070; ($1695) This would replace the entire bottom end with all new parts and is good for 96" and 103" builds. But who knows if the crank is any better than the original? I'd like to think it is the beefed up version introduced in '09 at least. And the case would not come machined for future 4.00" 110" cylinders, so it would be good to get that done before reassembly. Add more $. The nice thing about this option is it would be done fairly fast and includes most gaskets and would reuse the current cylinders, heads, cams etc. 4. SE pro crankcase PN 24601-10B ($700), plus either SE 4-3/8 crank ass'y PN 23729-07B ($730) or SE 4-5/8" crank ass'y PN23893-10A ($1250). Plus you still need all gaskets etc. The 4-3/8 crank will get you a 103", 110" or 113" engine; while the latter will get you a 109", 116", or 120" engine; depending on cylinder bores of 3.875", 4.00", or 4.060" respectively in each case. The crankcase comes already bored for anything up to 4.060". Lots of extras would be needed, and a fair bit of time. 5. Complete drop-in crate 110" motor PN 19176-16 ($5195). This would also be faster option, and I could sell the current 103" engine for maybe $2000. Net outlay $3200 plus R&R time. 6. Complete drop-in crate 120ST motor PN 19221-15 ($5695). For the minimal $500 difference over option 5 this would be cool, and I could still sell the current 103" engine for maybe $2000. Net outlay $3700 plus R&R time. I am sure there are plenty of incidentals I have overlooked, but just trying to get the big picture. So it is just a matter of time versus cost, versus what I want in the end. If it was your decision, what would you do?