Newbie to this Forum.  Recently acquired a LH Martini Mk IV ISU that I absolutely enjoy shooting -- my Anschutz Super Match is now retired until further notice.  Took awhile to find an affordable lefty (local, no less!!) but worth the wait.  Currently shooting prone matches, and will start in a 4P League this Fall.  I have a Lyman targetspot in need of a new reticle.  I have a couple of names of reputable, reliable shops (Bob Seipp, Parson's) but was cautioned about extended turn-around times.  It was suggested I reach out to the Forum for info on doing the repair myself, so am looking for info on where to get wire, soldering temps, tips/traps/cautions, degree of difficulty, etc.

Has anyone out there repaired their reticle?  What advice can you offer?

Years ago I bought a Lyman STS that had a broken crosshair. I split a strand of unwaxed dental floss down to one individual strand and super glued it in place. That was 25 years ago and it is still there, about a fine to medium width.

Thank you all for the suggestions ans links to past discussions on the subject.  I'm on my way out to the shop to check it out, knowing what I do, and if it seems straightforward (patience grasshopper) I may give it a go myself.

If you know a machinist, either active or retired he may be able to help you out. Have him hole the cross hair holder in either a V block or vice and level up the attachment screw holes and then scribe lines on center on the fact and you can then use those lines to line up your wires. It may sound a little complicated but if he has a vice and height gauge he should be able to do it in less than  a half hour. 
Sam

Thanks to everyone who offered advice on reticle repair.  I decided to attempt myself, and if it did not work, I would send it out.

I built a jig similar to the one one the you tube video, following the suggestion of using blue painters tape for contrast.  I scribed perpendicular lines on the tape to act as a placement guide.  After separating out a single strand from unwaxed dental floss, I roughly laid it across one axis at a time.  I then manipulated it until exactly along the axis line, and used additional tape to stretch the floss tight.  I followed the same procedure for the perpendicular axis, and once satisfied that everything was not only tight and taught, square, and centered, I affixed with superglue (slow drying).  I had to repeat the process once as I tightened the filament too much and it snapped.  Let it set for 24 hours, trimmed the excess, installed in the scope...and there I had it...new cross hairs!

So if all goes according to plan, I am set for the next 25 years.  Or my grandson will be...At some point I guess I should teach him how to effect crosshair repair...

Tom