Its just like a woman, take it slow and dont force anything to fit and it will all slide in easily.
Shuttle specific tips
1) Buy new SATA cables now and save yourself the hassle (all P style chassis seem to have bad SATA cables)
2) Dont use the front most HD spot for the raptor, its gets no cooling.
3) Read the threads on SFFTech about the SN26P
4) Install the CPU, cooler, ram, graphics card, HD, dvd in that order.
SZ87R6/i5 4560 stock/8GB 2333mhz/840 Evo 250GB/Seagate 2TB/ASUS 760GTX/Dell 2711
Rainbows lie in corded knots
While thunder wakes the sleeping crocs.