You should check out some of the ECF generated threads about the design modifications they are expecting from the mod makers. They seem to have pulled back a little from their original position, but it sounds like they won't allow vendors to participate on ECF without conforming to ECF's new specifications (including slots in the sides of tube mods). The pull back on that just happened on VTVP the other night when Rolygate said mod makers (he mentioned the silver bullet specifically) could argue that they have a safety record if they know of thermal incidents and battery explosions in their products that did not result in injury.
So, future versions of the Precise and all other tube mods will change by June to incorporate the slots in the sides or the vendors will face the possibility/likelihood of being booted from ECF.... at least that's how I've understood ECFs position. There has been a bit of back and forth and some backlash from non-vendor members of ECF (regular ECF members like you and me), so perhaps it's still up in the air.
EDIT: It appears either the position has changed or I misunderstood to begin with. The position is currently that if a vendor does not comply, ECF will actively discourage customers from buying whatever mod does not comply unless the vendor is able to make the safety record argument I stated above.
Here it is.