COULD YOU PLEASE EXPLAIN WHAT YOU MEAN BY ( DRILL BIT THE WALL CORES ) ? I MUST ADMIT I HAVE NEVER HEARD OF THIS BEFORE. BE VERY INTERESTED IN LEARNING ANOTHER TRICK. PLEASE EXPLAIN SO THAT THE SLOWW CAN UNDERSTAND THANK YOU VERY MUCH. I WILL HAVE THAT OTHE BLOCK PULLED APART MORE TOMORROW I THINK. BUT I DID NOTICE THAT IT DOES NOT HAVE ANY REINFORCED WEBBING ON THE CRANK SADDLES.. SO IT IS PROBABLE NOT GOING TO TURN OUT LIKE I HAD HOPED. BUT I WAS LOOKING AT ONE OF MY OTHER BLOCKS THAT I HAVE . IT HAS A D2TE BLOCK CASTING NUMBER WHICH I DIDNT PAY MUCH ATTENTION TO AND I NOTICED TO DAY, THAT IT HAS THE EXTRA MAIN WEBBING AROUND THE CRANK SADDLES. COULD THIS BE SOME THING DIFFERENT THEN WHAT I THOUGHT OR ??? ANY FOOD FOR THOUGHT WOULD BE GREATFUL.. THANK SCS