Trying to replace a gasket for the head. Second attempt as I must have checked wrongly before getting way frustrated and finally asking from your techs. Was told I had the wrong size. They're very helpful, so I learned to ask first and remembered to send a photo of the S/N. I wish there was an easier way to know if I purchased the correct one. Also the second one is hard to install but I sense hope. Looking for how-to videos on your site to show me proper installation instructions, but not finding. Would be nice to have a video with the item in the shopping section. Got the food grade grease finally, too bad that's necessary, as with other machines seen on youtube it appears to be an easier fit. Now to see if it'll wedge in.