I encountered something new to me. Not only couldn't I get sealant into my new 35s but following that I discovered I couldn't air them up, either. I poked around inside the valve with a drill bit and got them to take air but not sealant. Airframes advised me to use a welding rod or coat hanger wire, heat the tip, and melt through the obstruction. No complaints, no criticism, just sharing info in case others have the same problem. Simple fix, but I didn't know about it until I called and asked.