Hello All: <p> I have a nice 8x10 Korona that requires I bite the bullet and replace the bellows. On my much more modern 4x5 this would be a simple job that I would be comfortable doing myself. On the Korona, it doesn't look that easy -- in fact it looks like a real woodworkers job. Am I missing a simple solution or is it really a job for a professional. Does anyone have any suggestions or experience with replacing these bellows that they could share? Do the various bellows replacement companies gleaned from various posts just send you a new bellows or do they also do the installation. Thanks for the info.