Thanks Terry, site looks great and my wishlist is intact! 
Quoted from pinballlife:Shipping costs go up anytime a parcel hits the next pound mark. For example, if you have 1.10 pounds of parts in your cart and you add the Mill Wipes (.40 pounds) your total weight will go up to 1.60 pounds and your shipping cost will not increase at all. Conversely, if you have 1.70 pounds of parts in your cart and you add the Mill Wipes your total weight will go up to 2.10 pounds and shipping will increase.
Terry.
Good explanation.
My wife owns a business that does a lot of internet sales. We have very carefully made sure the weights on our products are accurate for precise shipping charges. We do not mark up shipping AT ALL (no extra "handling charges", ect.) but yet the biggest reason people abandon their carts is shipping costs!
It is unfortunate that some don't understand that "free shipping" means "your paying for it another way"
