Multiple Attributes with Vales

When having more than one attribute that changes the value of the product the price reverts back to the original price when selecting the 2nd or third attribute with price change.

example;
original price $10
Size
650mAh
900mAh +$2.00[2]
1100mAh +$5.00[5]
Style
Regular
Extended 650mAh “K Tank” +$2.00[2]
Extended 900mAh “K Tank” +$.95[.95]
Extended 1100mAh “K Tank” +$.99[.99]

Selecting the size of 900 or 1100 adds $2 or $5 to the total price correctly, but if you go back and select 650 after selecting any other option it will stay at the options price in the total.

And after selecting the size of 900 or 1100 then selecting the style of 650 extended k tank or 900 or 1100 it only adds the $2 .95 or .99 cents to the total or $10 showing $12 when it should still have the $2 or $5 from the size selecting added with it being $14 or $17 price at the bottom

They do total correctly at checkout

Am I setting the values incorrectly or is this an error in the code?