Seems that changing the speed sensor just consits of removing the front wheel and throwing in the part I already have.
If a shop could do it for 30min labour and had time after work hours this week or anytime this Saterday, id do it there.
If I do it myself, what kind of front stand do you need to use?, ones i've seen seem to use the front wheel shaft to keep the bike up and that won't work, can rocks be used? I live near a stream so I can pick up rocks quite easily.
Id throw in a case of beer if I could borrow someones stand and tools for this job .