Could we get clarification of rule R11 Certain non VEX screws, nuts, and washers are allowed. It says "Robots may use ......and any commercially available nut, washer, and/or spacer... The intent of the rule is to allow teams to purchase their own...... without introducing additional functionality not found in standard VEX equipment." Last year, commercial spacers had to be the same diameter as official VEX spacers. ie: to make cascade slides, the VEX spacers could be ground down but commercially available spacers with a smaller diameter could not be used. Does this fall under "introducing additional functionality" and therefore cannot be used again under this years rule? Need to know for inspection purposes as expect to see elevator slides this year again. Thank you.