(assuming signals travel 1/2 foot per ns in cable).

*Cables upstream of trigger
Pre-amp to M/S: 30' (60 ns)
>Diodes/M/S/MSCntrl  (100 ns) [1] (George's simulation...not known originally)
M/S to Mother: 50'  (100 ns)
>M/S to Mother: 75'  (150 ns) [2] (longer than anticipated)
(160/260/310/310)

*TILE board shaping etc
Mother to TPRO: 1500 ns [LE (1400) + width(100)]
*Digital trigger stuff (input to input)
TPRO to SURF: 4 ticks (168 ns)
SURF to L1D: 4 ticks (168 ns)
L1D to LUMI: 6 ticks (252 ns)
LUMI to DFC: 1 tick (42 ns)
DFC to GCAL: 2 ticks (84 ns)
>DFC to GCAL: 4 ticks (168 ns) [3]) (Mike says he can reduce)
GCAL to cables: 2 ticks (84 ns)
>GCAL to cables: 4 ticks (168 ns) [3] (Mike says he can reduce)
(2298/2298/2298/2466)

*Cables downstream of trigger
GCAL to data-crates: 50' (100 ns)
GCAL to data-crates: 100' (200 ns) [2] (longer than anticipated)
Crates to frontend: 25' (50 ns)
(150/150/250/250)

*********
**TOTAL**
*********
(2608/2708/2858/3026)

2608 ns	[original estimate]
2708 ns	[original + 1]
2858 ns [original + 1 + 2]
3026 ns [original + 1 + 2 + 3]