The round gravity water fill was hard to find...found it in beige (another reason I painted white) and the cable hookup at Tom's Borderline Bargain's an RV surplus dealer north of White Pigeon MI. The most commonly found fill has a flat top. also the inside spout is about 2" long on all. The original inside spout will "turn out and can be reused on a new one with the short spout. I bought the check valve and backing plate for the pressure fill at Bontraeger's Surplus in White Pigeon for about $5. The Elkhart RV surplus dealers wanted $18 for this part and $9 for the cable hookup. I bought all my parts for under $10. The plastic cabinet struts I replaced with metal ones from Tiffin Motorhomes Service Center parts department for $1.60 each. Two plastic OEM parts (junk) were $6 for 2 in Elkhart.