diff --git a/trunk/PowerLock Calculations.xls b/trunk/PowerLock Calculations.xls deleted file mode 100644 index 1843c50..0000000 Binary files a/trunk/PowerLock Calculations.xls and /dev/null differ diff --git a/trunk/PowerLock Calculations.xlsx b/trunk/PowerLock Calculations.xlsx new file mode 100644 index 0000000..f4155b3 Binary files /dev/null and b/trunk/PowerLock Calculations.xlsx differ