sorry duff info on my part, the wire splice is no good for the 28 you need the hrc card instead. Seen as it is spring and biking weather is here now what i would do is just enjoy riding for now and start picking bits up you need/want to improve things and embark on a tune up over next winter. Depending on your budget you can pick things up new or keep your eye out on classifieds here and yahoo japan has worked for me, there are some mc28 needles and x & Y pieces in the classifieds right now but im not sure if there the ones required.