Pivot spring replacement

Hi all.
I spent this morning cleaning up an old Ryobi CMS812 210mm compound mitre saw in order to give it a tune up. Was coming apart nicely and lots of sawdust and gunk was removed.
However, I am having trouble replacing the pivot spring (the spring that enables the blade to raise itself back up after a cut). I'm sure others have come across this before so am looking for some guidance, tips or hints so I can finis this job.

Thanks in advance
Blinger

Don't know what size you need or style pics would be good but if it's this type .i have found a good source of them in this style of cheap clamp