On a lens like that I would certainly consider posting it to Sigma themselves for repair. Though the cost may be a little prohibitive. (repair not the posting)

Well being the owner of both a K7 and a K5ii. Unless you are in a low light situation. For all the bells and whistles the K5ii comes with. The K7 compares very favourably in picture Quality. A robust unit, that you could take to a war zone. We all know that above 800 ISO the K7 is absolutely useless but for me this is its only drawback. I often take both cameras out with me. Quite often Im surprised that the best image for the day comes from the K7. Its easy for people to crave and purchase the latest models. I agree that if someone was on a limited budget coming into photography. They could do worse than getting hold of a K7. At the current giveaway prices..

I have no need to attempt this. But look like decent instructions to have a go.

You have some very saleable items there....

Intrigued by what else is in the odds n sods box ! I would be interested to know, how this result would compare to a digital AF kit lens ?

Fabulous outcome Gary. You and that lens have produced... Couldn't have been easy,

Anything with 8gb of ram will perform well...

Nice images. I have been attempting some macro shots myself recently. So I know how tricky the focus can be. I appreciate these were taken almost in the dark. But the cast and shadows the flash leaves on them don't help. I think it is good to show both close up and full size. Keep it up. Have you tried using an extension tube with the macro lens for real close work ?

I have the 150-500 and for the money is a superb lens, Much faster focusing than the 55-300. Not to easy to hand hold, but a monopod soon sorts that out.

Thanks for that information Mike. I'll look into it....