Omega Chronostop 145.007 Button Pusher

Hello forum,
I think need a new button pusher for my chronostop 145.007. It appears to be corroded and sticks quite often. At the moment, I can't afford the service that Swatch Group offers, especially pricy since the watch has to be sent to Switzerland. There is no partial service available. Can someone point me toward a new button pusher for my Chronostop? Do I have the correct part number - 086ST0015? Does anyone here have the original part with a washer? Also, is the crown 069st43059? Finally, would you recommend going with an aftermarket part if thats all you could afford?
Thank you

Is it normal for questions to go unanswered for a few days?

Maybe you can get your watchmaker to dismantle the pusher to
clean and lubricate it? Never the less, any Omega qualyfied AD can
get this part and fit it without sending the whole watch to Switzerland
I assume.

Strange posting in a non-paid, friendly forum with enthusiasts but you made have meant this differently....

I meant it exactly for what it is. But the question was partially answered.

It's a totally great forum. I guess I expected answers to questions which I could answer with a bit of research. I did the research and found the parts- pusher, crown, and winding stem. Looking for a replacement ss bracelet. Contacted a local omega boutique, waiting to see what parts they could source and how much they are as my budget is terrible these days.