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Whay have you used those 2W resistors? I don't think there is any use of them in the circuit except you wish to limit some curent. But these ICs already have a thermal shut-down which will switch-off the output current flow as soon as its temperature goes beyond a preset value.
it seems that you have a pin from the second rectifier unconnected. is it just a graphic error?
and, yes, you dont need the 2W resistors, and if you stil use them you will have more power disipated at the maximum current drawn from the suply.